Gigabyte, or GB, information and on your computer. This word from the prefix Giga, and the word Bytes is formed. This term means one billion bytes or 109 bytes. but in the calculations that the bytes according to the power of two is calculated, a billion bytes, the equivalent of 230 or 824, etc. 741، 073، 1 byte. Each gigabyte equal to 1024 megabytes. in other words, each gigabyte equal to 210 MB.